NEET Physics Question - Modern Physics

Assertion (A): In sodium nucleus \(_{11}^{23}\text{Na}\), there are no electrons.

Reason (R): Atomic number of sodium is 11.

Both (A) & (R) are true and the (R) is the correct explanation of the (A)

Both (A) & (R) are true but the (R) is not the correct explanation of the (A)

(A) is true but (R) is false

Both (A) and (R) are false

Solution:

Nuclei contain protons and neutrons, not electrons. So (A) is true. Sodium's atomic number is 11. So (R) is true. (R) defines the element and proton count, but doesn't explain why electrons are outside the nucleus. So (R) does not explain (A).

Rankers Physics

Sodium Nucleus Electrons

Solution:

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